Sash-fastener.



W. G. RGBINSON.

,SA SH FASTENEB. APPLICATION FILED FEB. 15, 1909.

Patented Apr. 13, 1909.

WILLIAM G. ROBINSON, OF GAVBRIDGE, MASSACHUSET'IQ.

SASH-FASTENER.

Specification of Letters Patent.

Patented April 13, 1900.

Application filed February 15, 1909. Serial No. 477,980.

To all whom it may concern:

Be it known that 1, WILLIAM C. ltonrxsox, a citizen of the UnitedStates, residing in (ambrit go, in the county of Middlesex and State ofMassachusetts, have invented an Improvementin biash l asteners, of whichthe following descriptiornin connection with the accompanying drawings,is a specilication, like letters on thcdrawings representing like parts.

The present invention relates to a sash fastener, and is embodied in asocket member adapted to be secured to the meeting rail of the lowersash, the said member having a recess formed with an inclined surfaceand two side wings, there being a roller located in said recess andadapted to he between the inclined surface and the side rail of theupper sash. The roller is provided with a surface portion of yieldingmaterial, preferably rubber, and with a lateral middle opening whichreceives a linger connected with a lever pivotally supported upon theoutside of the socket piece so that a movement of the said lever on itspivot will lift the roller out of engagement with the sash and theinclined surface. The opening of the roller is materially larger thanthe finger. so that the roller tits loosely and is not prevented frombeing wedged into position between the sash and the socket. T he leveris provided with a spring which tends to act through the. finger uponthe roller so as to hold the same in contact with the inclined surfaceand the sash, thereby insuring an initial frictional engagement which isincreased by the wedging action due to the movement one sash withrelation to the other.

Figure 1 is a perspective view of a sash fastener embodying theinvention shown as applied to a window; Fig. 2 is a side elevation,partly in section, showing, in full and dotted lines, the fastening andturfastening )ositions; Fig. 3 is a transverse section on a line at ofFig. '2.

The sash fastener embodying the invention com rises the socket member aprovided witl a base portion a adapted to be secured to the meeting railA of the lower sash, as by screws a. This socket member 's provided withan inclined rear, inner sur- 'ace (1* with upwardly projecting walls orisnges a and a. at opposite sides. These vallsor flanges serve aslateral confining members for a roller 1) which is preferably made ofmetal and which has a surface of yielding material, preferably rubber,indirated by the reference letter 0-.

The roller t) is loosely supported and by its own weight will settleinto contact. with the side rail B of the upper sash, and with theinclined surface a of the socket member so thatv any movement of" eithersash in the direction to open the window, either at the bottom or thetop, will tend to wedge the roller firmly into contact with the siderail of the sash and with the socket member at, thereby locking the twosashes firmly together. I A

closing movement of either sash, on the contrary, will tend to roll theroller I) out of frictional contact with the opposing surfaces, so thatthe window will close freely. In order to open the window, however, itis necessary to support the roller out of contact with either of theopposing surfaces, and for this purpose the device is provided with aside lover a pivoted at c on the outer surface of the socket piece, thesaid side lever having a finger c which projects laterally into theopening I) in the middle. of the roller 11. This opening is madematerially larger than the finger 0 so that in the wedging process whichlooks the sashes together the roller is free to find its final positionunder the compression of the yielding surface without being opposed byany connection with the lever c. The said lever c is shown provided witha handle or actuating device 0* by which it can be moved to lift theroller in pening the window. The lever and finger also constitute meansfor holding the roller, in case the lower sash is pushed above the topof the upper sash, as may sometimes happen, for instance, whcn thewindows are being washed.

In order to insure the proper wedging action of the roller to preventthe movement of either sash in a direction to open the window, the leverc is provided with a lightspring 0 which tends to pull the loverdownward and to bring the finger piece a into engagemcnt with the rollerin the opening 71 and hold the same in contact with the upper sash andwith the inclined surface a, so that sufficient friction will be broughtto bear to insure the wedging operation upon any at.- tempt to moveeither sash.

I am aware that sash fasteners have heretofore been constructed withmembers which are adapted to be friotionally wedged between an inclinedsurface and the side rail of the sash, and I do not, therefore, broadlyclaim such a structure.

however, of any structure in which a wedgin g roller with a \fieldingsurface is positively, though loosely supported, and not depend ent uponthe upper a'mSlI to retain it in engngement with the socketpiece. Claim.v

A sash fastener comprising a socket member hm'ing an inclined innersurface with walls or flanges projecting above said surface at oppositesides; av roller provided with 11 peripheral surface of yieldingmaterial con-' tained in the space between said inclined wall and saidupwardly projecting flanges, said roller being provided with a lateralopening in the middle; a lever pivotally sup- I am not aware,

Witnesses M. E. COVENEN, JAS. J. MALOxEY.

